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Windows 7: Brightness Problem: Increases when decreased and vice versa

20 Oct 2014   #1
mvthakar

Microsoft® Windows® 7 Home Premium (x64)
 
 
Brightness Problem: Increases when decreased and vice versa

Hello folks,

I'm having a problem with brightness in my laptop.
My Laptop specifications: Drop Down Menu at the left-bottom corner of this post.
It is 1 and a half years old.

If thread title is confusing, let me explain the problem in detail:

When I bought this laptop, it had a Anti-Reflective HD LED Display (which I really liked).

But a few days back, I noticed a horizontal white line blinking at the top of the screen.
The line would show up for 1 second and be gone for 2 seconds.

Then the next day I turned on laptop and noticed not only the while line blinking but also the display was jumping every 2 seconds.

I first thought it was a Graphics Driver problem, so I re-installed, but no luck. (Intel + AMD Switchable)
So I checked if display jumped at BIOS screen, and yeah, it did .

So I contacted a local Computer Repair shop and they checked what was the problem.
The problem was the Display itself. They told me the display needed to be replaced.

I agreed and replaced it with a new shiny (but reflective) display.
Brightness settings worked fine with the original display
But after replacing it, there was a small problem with brightness.

If I increase brightness, it decreases and if I decrease it, it increases.

I kinda sounds funny, doesn't it?

But there are some facts:

> Brightness acts like this in Windows only no matter from where I change it (FN Key, Mobility Center).

> I can change brightness at BIOS Screen using FN keys and it works fine there.

I even re-installed Windows using Recovery Disk provided by Samsung but problem still persists.

Any idea what could be causing this?

Sorry if there are any grammar mistakes, I'm not native.


My System SpecsSystem Spec
.
21 Oct 2014   #2
MilesAhead

Windows 7 32 bit
 
 

This might be helpful

Toshiba Support Forums: Satelitte L500-1ZP: Screen brightness ...

Edit: I know you don't have a Toshiba but the fix may be worth a try as it can easily be undone there is no positive effect.
My System SpecsSystem Spec
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 Brightness Problem: Increases when decreased and vice versa




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